Abstract: A recording medium of the type having a first coat which is discolorable by the limited application of heat in a limited area includes a second coat of a material having heat-conducting and electrically insulating properties applied on the first coat and a third coat of a material which is electrically conductive applied on the second coat. The third coat is removable in a limited area by the action of an electric arc which is limited in time and area. A record is made on the recording medium by a technique which includes the steps of igniting an electric arc between the third coat and an electrode, maintaining the electric arc until an opening is formed in a portion of the third coat corresponding to the shape of the electrode, and heating the second coat through the opening to an extent that the amount of heat passing into the first coat from the second coat adjacent the opening causes permanent discoloration of the first coat.

Abstract: A shredder device for selectively shredding paper sheets, such as bank notes, in the form of an interchangeable module for a conveying system includes a conveyor movably mounted within the module, means disposed along a feed path for directing selected sheets onto the conveyor and a pair of shredding cylinders mounted rotatably in the module so as to receive and shred sheets mounted on the conveyor.

Abstract: An analysis kit for fuel oil to determine its silica-alumina catalyst component content, comprises a plurality of syringes for sampling fuel oil, sample containers for holding the sampled oil, an organic solvent for dissolving the oil in one of the containers, a filter for the solution of the sample in the organic solvent, a reagent for dissolving a catalyst component in the filtration residue formed by the filter, a measuring cylinder to contain the solution formed by the reagent, purified water for diluting the solution in the cylinder to a predetermined volume, color-producing reagents to be added to the solution adjusted with the purified water, a unit for comparing the color developed by the color-producing reagents with colors of known standards, and a portable box accommodating all of the above-mentioned items and supplies.

Abstract: An apparatus for cyclically decelerating and accelerating a ductor roller which has a journal which is mounted on a swing arm for rotation on the arm and is moved with the arm to selectively and alternatively engage the ductor roller with a first roller, such as a fountain roller and a second roller, such as a first roller of a printing press, is employed in inking and damping units of such presses. The apparatus includes a bearing head of the spring arm which provides a rotatable mounting for the journal of the ductor roller and the arrangement includes a planetary gear system connected to the journal and to a free wheel element with a controllable brake acting between the planetary gear system and the bearing head of the swing arm in an arrangement which permits the free wheel element to rotate after the braking system has been engaged to cause the winding or tensioning of a spring, such as a spiral spring, which is disposed between the free wheel element and the journal of the ductor roller.

Abstract: A chain conveyor section of a longwall conveying device for underground mining of a longwall using a winning machine riding on the conveying device comprising a trough member defining a trough adapted to receive a scraper chain therein the trough member having one flanged side wall and one unflanged side wall positionable next to the longwall, a main rack section connected to the unflanged side wall extending over the trough and toward the flanged side wall for holding one end of the scraper in the trough, and an intermediate rack segment pivotally connected to the main rack segment for interconnecting at least the unflanged side wall sides of adjacent chain conveyor sections of the conveying device.

Abstract: A device for enclosing a person's head which is fitted with a breathing mask for the purpose of testing the sealing of the mask to the wearer's face comprises a substantially cylindrical rigid helmet having a closed top adapted to overly the wearer's head and an open front portion adapted to be positioned in front of the wearer's face which is bounded by a front rim and side portions having bottom edges which have cut out curved portions forming supporting engagement edges conforming to the wearer's shoulders. A flexible apron has its periphery secured to the helmet rim around at least a portion of the opening and it carries drawstrings at its bottom edge which may be tightened around the body of the wearer so that the helmet with the apron seals over the person's head.

Abstract: A fuel cell is provided which comprises a matrix layer of an electrolyte in a material which chemically and physically absorbs the electrolyte, such as a polyester fiber bonded with phenol formaldehyde resin. A porous anode electrode and a porous cathode electrode are arranged at respective sides of the matrix layer. The electrolyte comprises polyphosphoric acid. At least one of the electrodes comprises an additional electrolyte carrier, for example, a tungsten carbide electrode having pores which contain a polyphosphoric acid. A method is also disclosed for forming the cell from a matrix of a plurality of fiber materials and using a polymeric binder for the materials. The marix is dipped in a polyphosphoric acid so that a reaction takes place between the acid and the polymer fiber. The cathode and the anode are arranged on respective sides of the matrix and stacking together. An anode of tungsten carbide material is used, having a portion which also carries the electrolyte in the pores thereof.

Abstract: A method for the formation of an overcast seam by means of a zig-zag sewing machine. After the formation of the first looping of needle and looper thread in a first overstitch position of a needle bar the needle thread is loosened and the needle bar moves into a second overstitch position, in which a further thread looping takes place. After the formation of at least one straight stitch in the second overstitch position, the joining thread between the first two thread looping is drawn out, forming a loop in the first overstitch position, the needle pierces into the loop, after which it is released. The seam thus formed is a firm joining seam by which the sewing material is not gathered between the thread loopings.

Abstract: A coating composition for polyolefinic films, especially polypropylene films, which consists essentially of a solution of a three-component polymeric system comprising:(a) about 50 to 80% of saturated polyesters, unsaturated polyesters or mixtures thereof(b) polymers and copolymers of acrylic esters; and(c) epoxy resins, the ratio of each of components (b) and (c) being from about 1 to 49% and being selected as to make up the total percentage of the polymeric system.The coated products and the coating process are also covered.

Abstract: A coke oven charging device for supplying coal to the charging chutes on the roof of a coke oven battery of a plurality of horizontally arranged coke ovens, comprises a horizontally disposed circulator conveyor supported on the roof at a spaced location thereabove and having a plurality of longitudinal and transversely spaced closable discharge openings. The conveyor is advantageously mounted for some displaceable movement on the roof. In addition, a charging car is movable on the roof over the coke ovens and it includes a closed transfer conveyor mounted on the car which is disposed along the length of the car. The car is advantageously provided with a plurality of coal transfer connections which makes it possible to connect the car and its conveyor to a selected opening of the circulating conveyor and to a selected chute for the transfer of the coal from the circulating conveyor through the car conveyor and into the coke oven battery.

Abstract: A heat recovery system for use with a rotatable cylindrical kiln having a curved sidewall surface and which is adapted to be fired, for example, by a burner supplied through a fuel supply line with fuel oil, comprises, at least one segment member which overlies and is spaced from the kiln curved sidewall surface and which defines a heat radiation absorbing surface. A coolant circulating system is connected to the segment member and a coolant is circulated therethrough and then into a separate heat exchanger which is used for recovering the heat. The heat exchanger may be employed, for example, to preheat the oil which is delivered to a burner for firing the kiln or it may be used in a separate system requiring heat. A segment member is advantageously mounted on an undercarriage so that it may be moved toward or away from the kiln surface in accordance with the heat exchange requirements.

Abstract: A damper construction, comprises, a central hollow tubular pipe pivot portion having an axially extending interior pipe coolant flow passage therethrough and a substantially cylindrical flat plate portion connected to the pipe pivot portion. The pipe pivot portion is mounted for rotation in a bearing formed at diametrically opposite sides of a tubular conduit made up of walls formed by longitudinal pipes arranged side-by-side in a circular pattern and welded together. The bearing includes a hollow portion and it is furnished with coolant which is circulated through the pipes of the conduit.

Abstract: A novel method is proposed for preventing bleeding of plasticizers on the surface of shaped articles of plasticized polyvinyl chloride resins. The method comprises blending a limited amount of an organosilane compound represented by the general formulaCH.sub.2 .dbd.CR.sup.1 --CO--O--CH.sub.2).sub.a Si(R.sup.2).sub.b (OR.sup.3).sub.3-bin which R.sup.1 and R.sup.3 are each a hydrogen atom or an alkyl group, R.sup.2 is a monovalent hydrocarbon group, a is an integer from 1 to 6 and b is a number of 0, 1 or 2 with the polyvinyl chloride resin prior to fabrication of the resin into shaped articles, fabricating the resin admixed with the organosilane compound into a desired shaped article, and subjecting the shaped article to a treatment with low temperature plasma of a gas. Carbon monoxide is preferred as the gas for plasma atmosphere.

Abstract: A press which has a short ram stroke in which the ram is movable in a single plane in a working direction and return direction, particularly for high speed cutting presses, comprises, a press frame with a ram carried by the press frame which is supported by springs which are rigidly connected to the ram and to the press frame and hold the ram resiliently for movement in the working and return direction but rigidly in all other planes.

Abstract: A device for moistening and discharging electrically insulating objects, comprises, an atomizer for atomizing a liquid, such as water, into a spray and for directing the spray through a path and onto the object. The spray is directed through a path which is provided with an electrode charger or a group of chargers arranged in a pattern for charging the spray particles with a charge opposite to the object so that when they contact the object, they discharge the object as well as moisten it. The device is usable in the printing industry by passing a paper web which has been either previously printed or will be printed through a path after it has been charged with a charge, such as a positive charge, and then directing a spray onto the web after the spray moves through a series of electrodes to impart an opposite charge to the spray particles from that of the paper, so that the particles both moisten the paper and discharge the charge therefrom when they are directed thereto.

Abstract: Rubber compositions curable to rubbery elastomers by heating are provided, in which co-vulcanization of an organic rubber, e.g. natural rubber or an organic synthetic rubber and an organopolysiloxane rubber can be effected to a satisfactory degree, whereas such co-vulcanization in the prior art involves several difficult problems. The characterizing components in the rubber composition are the organopolysiloxane which has at least two functional units of either mercapto groups or aliphatically unsaturated linkages in the molecule and a specific organosilicon compound which has a polysulfide linkage and one or more silicon-bonded hydroxy groups or hydrolyzable atoms or groups in the molecule.

Abstract: A canopy and shield structure for supporting a shield adjacent a working face in a seam-like mine deposit, comprises a floor skid which is connected through an extensible and contractable prop at the working face end to the working face end of a canopy adapted to be positioned in parallel relation to the roof strata. The working space is covered at the waste removal end by a shield which includes a lower two-arm lever portion which is pivotally mounted on the skid and an upper portion which is pivotally connected to the longer arm of the two-arm lever adjacent the upper end thereof and is also pivotally connected to the canopy. The two-arm lever is driven by a hydraulic drive motor and a parallel linkage is connected between the upper shield part and the canopy in order to provide a guidance of the canopy in a direction substantially perpendicular to the strata.

Abstract: The device for automatically turning a disc over includes a disc grasping mechanism which comprises a main arm, sub-arms mounted on the main arm to grasp the disc by the circumferential edge with the aid of springs, and electromagnets disposed to control each sub-arm against the action of the springs. The device further includes an automatic mechanism for turning the disc over and which comprises a main rotary shaft connected to the main arm at its middle portion and supported by an anti-friction bearing, a cam means disposed to swing the rotary shaft, a driving shaft with the cam means and a gear fixedly mounted on, the gear being in mesh with another gear fixedly mounted on the main rotary shaft to rotate the latter gear, and a driving motor operatively connected to the driving shaft.

Abstract: A device for applying pressure to a selected point on the human finger comprising an open clamping ring having crossing end portions which extend beyond the circumference of the ring, at least one actuating projection on the circumference of the ring extending radially outwardly therefrom and pressure means axially aligned with the actuating means and extending inwardly therefrom beyond the inner surface of the ring.